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Old 25th May 2006, 10:15 PM   #1
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Default Solder Paste Question

I purchased some solder paste /flux to use to help me the solder flow for hot tinning some PCBs I'm etching.

There is no information on the container other than "solder paste". It there a way to tell via some test etc if this is the electronic flux or the plumbing flux?
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Old 25th May 2006, 11:05 PM   #2
poobah is offline poobah  United States
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Don't use it if you don't know EXACTLY what it is...

Paste fluxes are generally used for plumbing. In electronics they show up in solder / flux paste formulas used for reflow soldering SMT parts.

Kester #331 is a nice liquid flux that will work well. It also washes off nicely with hot water and doesn't pollute.



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Old 26th May 2006, 07:23 AM   #3
AndrewT is offline AndrewT  Scotland
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Hi,
solder paste and flux paste are two completely different products.

Solder paste is a flux with solder powder incorporated.

However, you do need to check what kind of flux and it's compatability with electronic circuit boards.
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Old 26th May 2006, 07:34 PM   #4
artz is offline artz  United Kingdom
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Default solder paste

Hi Im new to the forums but iam a surface mount engineer and i know a bit about solder paste . Does it have a name? if it does i can probably tell you what it is ie is it Alpha/fry/indium or such like?
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